[nhggfu]

claims to use "the strongest [chess] engine out there" - then doesn't name it?

presumably this is equivalent to stockfish or leela, or AlphaZero. not saying what's "behind the curtain" => fail.

fwiw, lichess.org is free, stable, open source and uses strongest engines: stockfish, leela, and is free.

[pukarkhanal]

Its using stockfish, I will make sure to mention it. Thanks for your opinion!